自适应巡航控制系统对交通安全的影响研究  

Study on Impacts of Adaptive Cruise Control System on Traffic Safety

作　　者：秦严严[1] 

机构地区：[1]东南大学城市智能交通江苏省重点实验室,江苏南京210096

出　　处：《徐州工程学院学报（自然科学版）》2017年第4期46-49,共4页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：国家自然科学基金项目(51478113)

摘　　要：为探究自适应巡航控制(ACC)系统车辆与常规驾驶车辆混合行驶时的交通安全特性,基于计算机数值仿真分析不同ACC车辆比例下的交通尾部碰撞安全风险.以智能驾驶员模型为基础,考虑常规驾驶员反应延时以及ACC系统延时,构建常规车辆与ACC车辆的跟驰模型.考虑两种类型车辆空间分布的随机性设计高速公路上匝道数值仿真实验,并基于仿真结果计算不同ACC比例下的交通尾部碰撞风险指标.研究结果表明:ACC车辆有利于交通安全的提升,但当ACC比例在40%以下时,交通安全提升不足8%;当ACC比例处于40%~80%阶段时,交通安全提升较为显著;当ACC比例达到80%以上时,交通安全可提升至90%以上.研究结果可弥补ACC系统下交通安全影响研究的不足,为大规模ACC系统实地测试的实施提供参考.In order to explore the traffic safety of vehicles driving unde Adaptive Cruise Control（ACC）and regular systems,the rear-end collision risks are analyzed under different ACC proportions based on computer numerical simulations.According to the intelligent driver model（IDM）,the response time of regular drivers and the delay of ACC system are considered.Then,car-following models of regular and ACC vehicles are built.Besides,numerical simulations are performed near the freeway of on-ramp,in which the randomness of spatial distribution of these two types of vehicles is taken into consideration.In addition,the indicators of traffic rear-end collision risks are calculated for different ACC proportions based on simulation results.The results show that：ACC vehicles are beneficial to the improvement of traffic safety.However,when the proportion of ACC is less than 40%,the traffic safety is improved by less than 8%.When it is between 40% and 80%,traffic safety improvement is more significant.When it is more than 80%,traffic safety can be improved to more than 90%.The results of this study can cover the shortage of traffic safety impact study of full ACC system,and provide references for the implementation of field tests on large-scale ACC system.

关 键 词：自适应巡航控制系统 交通安全 高速公路 跟驰模型 计算机仿真 

分 类 号：U491[交通运输工程—交通运输规划与管理]